JP4974103B2 - ズームレンズ - Google Patents
ズームレンズ Download PDFInfo
- Publication number
- JP4974103B2 JP4974103B2 JP2005348697A JP2005348697A JP4974103B2 JP 4974103 B2 JP4974103 B2 JP 4974103B2 JP 2005348697 A JP2005348697 A JP 2005348697A JP 2005348697 A JP2005348697 A JP 2005348697A JP 4974103 B2 JP4974103 B2 JP 4974103B2
- Authority
- JP
- Japan
- Prior art keywords
- lens group
- lens
- zoom lens
- state
- positive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 claims description 14
- 230000004075 alteration Effects 0.000 description 27
- 201000009310 astigmatism Diseases 0.000 description 26
- 238000010586 diagram Methods 0.000 description 9
- 230000005499 meniscus Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 102220323354 rs1554946803 Human genes 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
- G02B15/1435—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative
- G02B15/143507—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative arranged -++
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Description
0.75<D/f2<1.25
R2B>0
ただし、f2:第2レンズ群の焦点距離、D:第2レンズ群の全長、R2B:第2レンズ群の最後部面の曲率半径であることを特徴とする。
0.75<D/f2<1.25
R2B>0
ただし、
f2:第2レンズ群の焦点距離
D:第2レンズ群の全長
R2B:第2レンズ群の最後部面の曲率半径
の条件を満たしている。これにより、ズームレンズのコンパクト化を実現できる。
X=Y**2/(l十sqrt(l−A*(Y/r)**2))十A4Y**f*4+A6Y**6+A8Y**8+A10Y**10
図3は、実施例1に係るズームレンズのレンズ構成図であり、(a)は、最広角状態、(b)は、標準状態、(c)は、最望遠状態を示すもの、図4は、実施例1に係るズームレンズの最広角状態における球面収差、非点収差、及び歪みを示すグラフ、図5は、実施例1に係るズームレンズの標準状態における球面収差、非点収差、及び歪みを示すグラフ、図6は、実施例1に係るズームレンズの最望遠状態における球面収差、非点収差、及び歪みを示すグラフである。
A:0.43584μm
B:0.48613μm
C:0.54607μm
D:0.58756μm
E:0.65628μm
r1= ∞ d1=5.900 n1= 1.78472 v1=25.7
r2= ∞ d2=0.320〜1.787〜0.304
r3= −185.750 d3=0.800 n2= 1.71300 v2=53.9
r4= 3.370 d4=0.020 n3= 1.51313 v3=53.9
r5*= 2.704 d5=0.760
r6= 4.510 d6=1.130 n4=1.80610 v4=33.3
r7= 12.900 d7= 6.521〜2.023〜0.407
r8*= 5.140 d8=0.020 n5=1.51313 v5=53.9
r9= 4.073 d9=1.430 n6=1.48749 v6=70.4
r10= −6.600 d10=0.100
r11= 5.760 d11=1.300 n7=1.58913 v7=61.2
r12= −12.720 dl2=0.100
r13= 15.500 d13=1.320 n8=1.80518 v8=25.5
r14= 2.496 d14=3.123〜6.154〜9.252
r15= 10.130 d15=1.180 n9=1.80518 v9=25.5
r16= −56.350 d16=0.66
r17= ∞ d17= 1.15 n10=1.51680 v10=64.2
r18= ∞
f=4.15〜7.99〜11.94
F=2.86〜4.08〜5.34
画角=65.0°〜34.4°〜23.4°
非球面データ
第5面(r5*)
A 0.2734
A4 −0.175308E−02
A6 0.109505E−02
A8 −0.225209E−03
A10 0.158585E−04
第8面(r8*)
A −5.8125
A4 0.152408E−02
A6 −0.425403E−03
A8 0.186806E−03
A10 −0.513259E−04
f2=5.536 D=4.27 D/f2=0.77
次に、本発明の実施例2に係るズームレンズについて説明する。図7は、実施例2に係るズームレンズのレンズ構成図であり、(a)は最広角状態、(b)は標準状態、(c)は最望遠状態を示すもの、図8は、実施例2に係るズームレンズの最広角状態における球面収差、非点収差、及び歪みを示すグラフ、図9は、実施例2に係るズームレンズの標準状態における球面収差、非点収差、及び歪みを示すグラフ、図10は、実施例2に係るズームレンズの最望遠状態における球面収差、非点収差、及び歪みを示すグラフである。
r1= ∞ d1=5.900 n1= 1.78472 v1= 25.7
r2= ∞ d2= 0.548〜2.412〜0.466
r3= −91.380 d3=0.800 n2= 1.71300 v2=53.9
r4= 3.669 d4=0.020 n3=1.51313 v3=53.9
r5*= 2.561 d5=0.870
r6= 4.800 d6=1.82 n4=1.80610 v4=33.3
r7= 21.487 d7=9.126〜3.729〜1.500
r8*= 9.734 d8=2.020 n5=l.58913 v5=61.2
r9= −5.047 d9=0.100
r10= 11.780 d10=2.090 n6=1.62041 v6=60.4
r11= −4.394 d11=0.100
r12= −6.052 d12=1.340 n7=1.69895 v7=30.0
r13= 3.119 d13=3.517〜7.050〜11.224
r14= 9.405 d14=3.000 n8=1.80518 v8=25.5
r15= −16.258 d15=0.100
r16= ∞ d16=0.800 n9=1.51680 v9=64.2
r17= ∞
f=4.15〜7.69〜11.87
F=2.91〜4.06〜5.41
画角=67.6°〜38.2°〜25.4°
非球面データ
第5面(r5*)
A 0.0238
A4 0.551468E−03
A6 0.181852E−03
A8 0.337067E−04
A10 0.152721E−05
第8面(r8*)
A 18.6978
A4 −0.190435E−02
A6 0.492125E−03
A8 0.623006E−04
A10 0.138029E−04
f2=6.97 D=5.65 D/f2=0.81
図11は、実施例3に係るズームレンズのレンズ構成図であり、(a)は最広角状態、(b)は標準状態、(c)は最望遠状態を示すもの、図12は、実施例3に係るズームレンズの最広角状態における球面収差、非点収差、及び歪みを示すグラフ、図13は、実施例3に係るズームレンズの標準状態における球面収差、非点収差、及び歪みを示すグラフ、図14は、実施例3に係るズームレンズの最望遠状態における球面収差、非点収差、及び歪みを示すグラフである。
r1= ∞ d1=5.900 n1= 1.78472 v 1=25.7
r2= ∞ d2=0.548〜2.346〜0.464
r3= −33.190 d3=0.820 n2= 1.67790 v2=54.9
r4*= 3.093 d4=0.970
r5= 5.435 d5=2.020 n4= 1.62004 v4=36.3
r6= −96.557 d6=8.833〜3.618〜1.50
r7*= 2.809 d7=2.470 n5=1.51633 v5=64.1
r8= −9.808 d8=0.120
r9*= 11.974 d9=2.700
r10= −3.477 d10=0.200 n7=1.80610 v7=40.4
r11= −2.573 d11=2.570
r12= 6.125 d12=0.879〜4.295〜8.296
r13= 9.073 d13=2.99 n8=1.76182 v8=26.6
r14= −16.227 dl4=0.11
r15= ∞ d15=1.00 n10=1.51680 v10=64.2
r16= ∞
f= 4.58〜8.55〜13.202.
F= 3〜4.32〜5.94
画角=68.0°〜38.0°〜25.4°
非球面データ
第4面(r4*)
A 0.5476
A4 0.157578E−02
A6 0.685253E−04
A8 0.454629E−06
A10 0.394742E−06
第7面(r7*)
A −1.6387
A4 0.143317E−01
A6 −0.850613E−03
A8 0.232605E−03
A10 −0.146094E−04
第9面(r9*)
A −8.6118
A4 −0.623431E−02
A6 −0.475627E−03
A8 −0.153647E−04
A10 0.000000E+00
f2=6.653 D=8.06 D/f2=1.21
L2・・・第2レンズ群
L3・・・第3レンズ群
P・・・直角プリズム
Z・・・ズームレンズ
Claims (2)
- 物体側より順に、
光束を90゜折り曲げる直角プリズム、
負レンズおよび正レンズで構成され全体として負の光学的パワーを有する第1レンズ群、
正、正、負のレンズで構成され全体として正の光学的パワーを有する第2レンズ群、
正の光学的パワーを有する第3レンズ群、より成り、
プリズムと第1レンズ群、第1レンズ群と第2レンズ群、および第2レンズ群と第3レンズ群の空気間隔を変えることで変倍し、
0.75<D/f2<1.25
R2B>0
ただし、
f2:第2レンズ群の焦点距離
D:第2レンズ群の全長
R2B:第2レンズ群の最後部面の曲率半径
であることを特徴とするズームレンズ。 - 前記第1群レンズは最広角端状態と最望遠端状態において、最も被写体側の同じ位置に配置されていることを特徴とする請求項1のズームレンズ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005348697A JP4974103B2 (ja) | 2005-12-02 | 2005-12-02 | ズームレンズ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005348697A JP4974103B2 (ja) | 2005-12-02 | 2005-12-02 | ズームレンズ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007155948A JP2007155948A (ja) | 2007-06-21 |
JP4974103B2 true JP4974103B2 (ja) | 2012-07-11 |
Family
ID=38240419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005348697A Expired - Fee Related JP4974103B2 (ja) | 2005-12-02 | 2005-12-02 | ズームレンズ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4974103B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103370645B (zh) * | 2011-01-31 | 2016-09-14 | 富士胶片株式会社 | 投影镜头和投影显示设备 |
JP5924542B2 (ja) | 2013-02-15 | 2016-05-25 | 輝 矢部 | 撮像光学系 |
JP6237106B2 (ja) * | 2013-10-18 | 2017-11-29 | コニカミノルタ株式会社 | ズームレンズ及び撮像装置 |
JP6006349B2 (ja) * | 2015-02-03 | 2016-10-12 | 株式会社ファイブ・ディー | 屈曲式ズームカメラモジュールの防振装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4508610B2 (ja) * | 2003-11-17 | 2010-07-21 | オリンパス株式会社 | 変倍光学系及びそれを用いた電子機器 |
JP2005181774A (ja) * | 2003-12-22 | 2005-07-07 | Fujinon Corp | ズームレンズ |
-
2005
- 2005-12-02 JP JP2005348697A patent/JP4974103B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2007155948A (ja) | 2007-06-21 |
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